ANATOMY

Detailed explanation-1: -The bladder is a hollow muscular sac that stores urine. It is located in the pelvis and is part of the urinary system. As well as the bladder, the urinary system includes two kidneys, two tubes called ureters leading from the kidneys into the bladder, and another tube called the urethra leading out of the bladder.

Detailed explanation-2: -From the calyxes, pee travels out of the kidneys through the ureters (pronounced: YUR-uh-ters) to be stored in the bladder (a muscular sac in the lower belly).

Detailed explanation-3: -The bladder is an expandable, muscular sac. Urine accumulates in the bladder as it arrives from the ureters.